Colored wax and candle



' THORBOGEBS, 01'

an: ND, INDIANA, ASSIGNOB TO STANDARD OIL COMPANY,

OF WHITIN'G, INDIAIELA, A COBZPOBATION O]? INDIANA cononnnwax am)cAn'nLE' Ho Drawing.

This invention relates to colored waxes and candles. Such candles may becomposed of colored wax or may have a coating of colored wax appliedthereto by dipping or in 5 other suitable manner.

'10 pink, lavender and red shades in waxes which contain rhodamine B andto a lesser extent with waxes. dyed with Chinoline .yellow. This fadingoccurs not only when the candles are exposed to strong light, but also.1 while they are stored in the dark.

- I have now discovered that this difiiculty may be practicallycompletely avoided by adding minute quantities of certain substances tothe dyed wax. Thus I have found 2 that minute quantities, for example,substantially less than 1% of beta naphthol when added to the coloredwax, reduce the fading practically to zero. 7

For example, the most troublesome color with which I am acquainted is ashell pink,

which is generally applied by dipping white candles in a coatingcomposition comprising approm'rnately equal parts of paraifine wax andstearic acid with rhodamine B to color.

A candle thus colored when stored in the dark at a temperature of 100F., will become practically colorless within two weeks. The addition of0.025% of beta naphtholto the colored wax stabilizes the color so thatitshows only. very slight fading after six weeks at the same temperature.At room temperature, an unstabilized candle of this color will showfading in about a month, while stabilized candles show no fading after40 about five months.

Not only has the added beta naphthol a very valuable result in thefinished product, but it exercises valuable effects during themanufacturing operation. .Thus in the com of dipping, during which abath of Application filed August a, was. Serial No. 298,626.

colored wax is maintained at a temperature around 150 F., there isappreciable fading which is reduced enormously when the wax containsbeta naphthol.

Instead of beta naphthol, "I may employ other substances having theproperties of beta naphthol. For example I may employ elemental sulfurin finely divided form. Such sulfur may be incorporated in the wax tothe extent of around 0.1%, and in that proportion exerts a highlyeflicient color stabilizing effect.

I claim: 7

1. The method of preventing fading of dye in dyed wax which fades onstanding which consists in adding to said wax approximate"- ly 0.025% ofbeta naphthol.

2. A dyed wax comprising stearic acid, a dye stuff and a of betanaphthol.

3. A dyed wax of a character normally fading on standing and containingless than 1% of beta naphthol, whereby fading is prevented.

4. The method of preventing fading of the dye in colored wax mixturescom rising paralfin wax and stearic acid, whic comprises araflin wax,out 0.025%

adding to such dyed' mixture less than 1% of beta-naphthol.

.5. The method of preventing fading of dye-colored waxes which normallyfade on standing, which consists in adding to such waxes less than 1% ofbeta-naphthol.

6. The methodof preventing fading of rhodamine-B and Chinoline yellowwhen used in colorin petroleum waxes which fade on standing, w 'chconsists in adding to said waxes a small proportion of beta naphthol lesthan one percent.

THOS H. ROGERS.

